CallMeter
CallMeter is a cloud-based platform for stress testing SIP systems and analyzing VoIP quality.
What CallMeter is
CallMeter is a cloud-based platform for stress testing SIP systems and analyzing VoIP quality. It evaluates, monitors, and benchmarks voice infrastructure, measuring more than 90 real-time quality metrics per call, per second, per endpoint, and direction. Load tests can be configured by endpoint count, SIP method, authentication mode, call duration, and message capture with ladder diagrams. It supports multiple audio codecs and H.264, H.265, VP8, and VP9 video. Continuous probes can run as caller or callee on an interval or cron schedule, use quality thresholds, track sliding-window status, and send webhook notifications. Its REST API supports test execution, metric retrieval, probe management, and CI/CD quality gates for GitHub Actions, GitLab CI, and Jenkins. Workers can be managed in the cloud or user-owned Docker deployments inside private networks. With user-owned workers, SIP signaling and RTP media remain in the customer network while aggregated quality metrics leave it. The seven-day free trial requires a valid payment method and converts to a paid subscription unless cancelled before it ends. Pricing is on request.
Good
- Measures more than 90 real-time quality metrics
- Configurable SIP load tests and message capture
- Continuous probes with thresholds and webhook alerts
- REST API and CI/CD quality gates
- Private-network workers keep SIP signaling and media local
Watch out
- Seven-day trial requires a payment method
- Trial converts to paid unless cancelled
- Cloud workers reach only publicly exposed SIP infrastructure
- Pricing is available on request
Who it suits
CallMeter suits telecom and network teams, SRE and NOC staff, DevOps teams, MSPs, procurement teams, and telecom managers evaluating or monitoring voice infrastructure. User-owned workers may suit teams whose SIP infrastructure is private.
Verdict
CallMeter offers SIP load testing, ongoing quality monitoring, and automation options across cloud and user-owned workers. Check the trial conversion terms and worker requirements for private infrastructure before choosing a setup.
Plans and prices
From CallMeter's own pricing page, checked 15 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Business | Priced on request | 50,000 audio min/month · 12,500 video min/month · 200 concurrent audio streams · 50 concurrent video streams · 10 workers/100 endpoints each · 50 probes · 180-day retention · on-premise workers · advanced analytics · full API · dedicated support · monthly or annual |
| Enterprise | Priced on request | custom or unlimited minutes · custom concurrency · unlimited workers/endpoints/probes · dedicated account management · custom SLA · multi-year retention · SSO · onboarding · custom monthly or annual agreement |
| Enterprise / White-Label | Priced on request | multi-tenant · branded · resellable · monthly or yearly, cancel anytime |
| Pro | Priced on request | 10,000 audio min/month · 2,500 video min/month · 50 concurrent audio streams · 10 concurrent video streams · 5 workers/50 endpoints each · 10 probes · 90-day retention · status pages · webhooks · media uploads · priority email support · monthly or annual |
| Professional | Priced on request | features, usage limits, and service levels vary · monthly or annual |
| Starter | Priced on request | 2,000 audio min/month · 500 video min/month · 10 concurrent audio streams · 2 concurrent video streams · 2 workers/25 endpoints each · 3 probes · 30-day retention · API · email support · monthly or annual |
The facts
Each one read from CallMeter's own pages, with the date it was checked.
What it does
- Alerting
- Probe state changes can send HMAC-SHA256-signed webhooks with retries and automatic disabling after repeated failures.checked 15 Oct 2026
- API and CI/CD
- A REST API provides programmatic test execution, metric retrieval, probe management and CI/CD quality gates for GitHub Actions, GitLab CI and Jenkins.checked 1 Oct 2026
- API authentication
- API keys use the cmk_ prefix, are shown only once, stored hashed and support role-derived permissions plus rotation and revocation.checked 15 Oct 2026
- CI/CD integrations
- Documentation describes quality-gate workflows for GitHub Actions, GitLab CI and Jenkins.checked 15 Oct 2026
- Cloud and on-premise workers
- Customers can use managed regional cloud workers or deploy Docker workers in their own networks; on-premise traffic stays local and only metric summaries are sent to CallMeter.checked 15 Oct 2026
- Cloud-worker limit
- Cloud workers can reach only SIP infrastructure exposed to the public internet, while private infrastructure requires user-owned workers.checked 1 Oct 2026
- Codec coverage
- Documented audio codecs include PCMU, PCMA, G.722, Opus, G.726-32, GSM and Speex; video includes H.264, H.265, VP8 and VP9.checked 15 Oct 2026
- Compliance
- CallMeter states that it processes personal data in accordance with the GDPR and CCPA/CPRA.checked 1 Oct 2026
- Continuous monitoring
- Probes can run continuously with caller and callee modes, interval or cron scheduling, quality thresholds, sliding-window status, and webhook notifications.checked 1 Oct 2026
- Continuous probes
- Scheduled caller and callee probes can run every five minutes or by cron schedule and evaluate configurable quality thresholds.checked 15 Oct 2026
- Data locality
- With user-owned workers, SIP signaling and RTP media remain in the customer network and only aggregated quality metrics leave it.checked 1 Oct 2026
- Documentation depth
- The documentation includes setup guides, worker deployment, API reference, troubleshooting, architecture, codec references and individual pages for more than 90 metrics.checked 15 Oct 2026
- Independent academic mention
- An energy-leak research paper lists the unrelated Android CallMeter project among analyzed applications and links to its GitHub repository.checked 15 Oct 2026
- Independent GitHub name collision
- A separate GitHub project called Call Meter 3G is an Android usage-monitoring app, licensed GPL-3.0 and discontinued in 2018; it is distinct from the SIP platform.checked 15 Oct 2026
- Independent repository activity
- The separate Call Meter 3G repository shows its latest release as version 3.11.15 dated February 12, 2019.checked 15 Oct 2026
- Licence
- The service, APIs and documentation are proprietary software licensed for internal business use during an active subscription.checked 15 Oct 2026
- Limit: AI assistant status
- The feature page marks the read-only local-model AI investigation assistant as coming soon rather than generally available.checked 15 Oct 2026
- Limit: cloud reach
- Cloud workers are intended for SIP infrastructure reachable from the public internet; private-network testing requires user-owned workers.checked 15 Oct 2026
- Limit: signaling-only comparison
- CallMeter’s own comparison says specialized open-source signaling generators can deliver higher pure SIP signaling throughput and remain useful for malformed-message or edge-case proxy testing.checked 15 Oct 2026
- MCP server
- CallMeter provides a read-only Model Context Protocol server whose tools are constrained by the supplied REST API key permissions.checked 15 Oct 2026
- Media codecs
- CallMeter supports audio codecs including PCMU, PCMA, G.722, Opus, G.726-32, GSM, Speex, AMR and iLBC, plus H.264, H.265, VP8 and VP9 video.checked 1 Oct 2026
- Media security
- The platform documents SIP TLS, SRTP, DTLS-SRTP and SDES-SRTP, with three SDES cipher-suite choices.checked 15 Oct 2026
Money
- Billing limitation
- Annual billing is paid upfront, saves approximately 16% versus monthly billing, and unused monthly or annual minute allocations do not roll over.checked 15 Oct 2026
Where it runs
- MOS scoring
- Voice MOS uses the ITU-T G.107 E-Model with codec-specific impairment factors, while video quality uses P.1201/P.1203 models.checked 15 Oct 2026
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